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OlgaM077 [116]
1 year ago
9

Workout the number of atoms in 0.5 moles of iron?

Chemistry
1 answer:
Luba_88 [7]1 year ago
8 0

Answer:

Explanation:Please assist me with chemistry assessmentPlease assist me with chemistry assessmentPlease assist me with chemistry assessmentPlease assist me with chemistry assessmentPlease assist me with chemistry assessment

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A 254.5 g sample of a white solid is known to be a mixture of KNO3, BaCl2, and NaCl. When 116.5 g of this mixture is dissolved i
Margaret [11]

Answer:

Mass of KNO3 in the original mix is 146.954 g

Explanation:

mass of KNO_3 in original  254.5 mixture.

moles of BaSO_4 = \frac{mass}{Molecular\ Weight}

moles ofBaSO_4  = \frac{68.3}{233.38}

                               = 0.2926 mol of BaSO4

Therefore,

0.2926 mol of BaCl2,

mass of BaCl_2 = mol\times molecular weight

                         = 0.2926\times 208.23

                         = 60.92 g

the AgCl moles = \frac{mass}{Molecular\ Weight}

                          = \frac{199.1}{143.32}

                          = 1.3891 mol of AgCl

note that, the Cl- derive from both, BACl_2 and NaCl

so

mole of Cl- f NaCl = (1.3891) - (0.2926\times 2) = 0.8039 mol of Cl-

mol of NaCl = 0.8039 moles

mass = mol\times Molecular\ Weight  = 0.8039 \times 58 = 46.626\ g \ of \ NaCl

then

KNO3 mass = 254.5 - 60.92-46.626 = 146.954 g of KNO_3

Mass of KNO3 in the original mix is 146.954 g

8 0
2 years ago
PLEASE HURRY UP!! I DON'T HAVE ALL DAY!
neonofarm [45]

B: The total thermal energy is greater in a large body of water than one much smaller

Explanation:

A large lake filled filled with cool water will have more thermal energy than smaller pond filled with warmer water because the total thermal energy is greater in a large body of water than one that is much smaller.

Thermal energy is a form of kinetic energy usually due to transfer of heat energy.

Amount of heat energy is dependent on the differences in temperature, mass and specific heat capacity of a body.

Both lake water will have the same specific heat capacity. Since larger body of water has more mass, it will possess more thermal energy.

learn more:

Specific heat capacity brainly.com/question/7210400

Thermal energy brainly.com/question/914750

#learnwithBrainly

7 0
3 years ago
Write the balance nuclear equation showing the decay of zinc-69 to gallium-69
Taya2010 [7]

Answer:

It is a beta decay equation unknown

Explanation:

none

5 0
2 years ago
Consider a transition of the electron in the hydrogen atom from n=5 to n=9. Determine the wavelength of light that is associated
lesantik [10]
Lol i need to answer more and plus n could also = # 4.65
5 0
3 years ago
What will determine the number of moles of hydronium in an aqueous solution of a strong monoprotic acid?.
marin [14]

Answer:

What will determine the number of moles of hydronium in an aqueous solution of a strong monoprotic acid? The amount of acid that was added.

Explanation:

3 0
2 years ago
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